activity 4 locating an earthquake epicenter answer key activity 4 locating an earthquake epicenter answer key

0000030968 00000 n at that station. approximate period of the surface waves in seconds? The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Reading Strategy. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) Sharing Information/Thinking Ahead: In the Evaluate section of the worksheet, student pairs are asked to compose answers to two questionswhether they think seismology is a reliable science and ways seismic data is useful for engineers. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . different types of seismic waves. Millions of people witnessed the motion of the earthquake on television. $8.25. Shear wave from earthquake, moving slower than primary waves, through solid material only. 0000103591 00000 n Focus. A little under 30 seconds, maybe around 26 seconds. A circle is drawn from each of the three different seismograph locations, where the radius of each circle is equal to the distance from that station to the epicenter. 0000078100 00000 n The epicenter of an earthquake can be found using the difference between the arrival of the Primary and Secondary waves. 5. focus - the point within Earth where an earthquake originates. 83 0 obj <> endobj Student exploration Graphing Skills SE Key Gizmos Explore Learning. Before going to the classroom, you will need to: Provide each student, with the following: Earthquakes occur every day all over the United States and all over the world. 92 0 obj <>/Filter/FlateDecode/ID[]/Index[83 25]/Info 82 0 R/Length 62/Prev 466624/Root 84 0 R/Size 108/Type/XRef/W[1 2 1]>>stream 87 0 obj <> endobj xref 87 28 0000000016 00000 n Please answer the following questions using the earthquake video shake, shake, shake. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. pen recorded the arrival of P, S, and surface and S waves to travel any distance up to The time travel 3,000 miles. For example, 0000002383 00000 n epicenter, the longer the lag time measured Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. 1. The uses of technologies and any limitations on their use are driven by individual or societal needs, desires, and values; by the findings of scientific research; and by differences in such factors as climate, natural resources, and economic conditions. (Grades The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. If the lag time were measured at a location closer to the epicenter, The period of a wave is the time between two adj, How does the period of the P waves compare to t. Use data from seismograms to locate the epicenters of earthquakes. What data is used to determine magnitude? n{6c&6NK*U;=9i%nF Students also investigate which structural designs are most likely to survive an earthquake. It is slower than the same earthquake's P wave and cannot travel through liquids. Every earthquake is recorded on numerous seismographs located in different directions. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 100 km 4.1 km/s 24.4 s; Finding the epicenter (continued) data table analyze and conclude answer the following questions on a separate sheet of paper. Record your answer from Lab Exercise #2, Step 1. Click for facts and worksheets in PDF! The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. I contacted the persons listed below to find out the location of the following people entitled to notice Name of Person Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Details. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Resources. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. MS-ESS3-2. The arrival of seismic waves will be recognized by an increase in amplitude look for a pattern change as lines get taller and more closely spaced (ex. 0000001604 00000 n 0000003855 00000 n Make changes to the sample. When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. PDF. All the arcs should intersect at a common point - the epicenter. What is an earthquake? HlRnQ?R\>BjK' Draw your signature, type it, upload its image, or use your mobile device as a signature pad. It shows the time required for P One seismogram indicates the distance to the epicenter. The earthquake occurred somewhere along that circle. %%EOF within type by subtype, then by grade, etc. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. Wikipedia, The Free Encyclopedia. In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. Last updated November 26, 2013. In the U.S., earthquake measurements under the MMS (those of magnitude 3.5 or higher) are still commonly erroneously referred to by the general public and media as being on the Richter scale, due to more familiarity with the Richter scale. 13 4 locating an earthquake epicenter geosciences libretexts . 0000115324 00000 n 01. Click on New Document and select the file importing option: upload Locating the epicenter of an earthquake worksheet answer key from your device, the cloud, or a protected link. Objective Use data from seismograms to locate the epicenters of earthquakes. [N'. 0000001396 00000 n All rights reserved. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . Use Figure 5 and the travel-time graph in Figure 4 to determine . Take a few minutes to read the information on the left side of this page for the 2010 earthquake off the coast of central Chile. As you read and complete the activity, take notes so you can complete the. 0000033429 00000 n The answer is the San Andreas Fault. Direct students to finish the activity by completing the. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. Seismic Waves. P wave. Before looking at the Earthquakes Living Lab, have pairs complete the, Then guide the teams to the Earthquakes Living Lab via the living lab website at. Dochub is the best editor for changing your documents online. To do this, have the students use, Find the epicenter of the earthquake on the map (. Review their answers to assess their base knowledge of the subject matter. 0000001861 00000 n HtA1D41`s(GME$Ke*YdEOYf2-:r. The, amount of time that passes between the Pwave arrival and the Swave arrival is. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Finding the epicenter worksheet answer key. epicenter of an earthquake, how Locating the epicenter of an earthquake worksheet answer key, locating the epicenter of an earthquake worksheet pdf, chapter 7 lab 1 locating epicenters answer key, how many seismographs are needed to locate the epicenter of an earthquake. In this investigation, participants will understand that S and P waves are used to find the epicenter of an earthquake by using seismograph data to triangulate an epicenter. 0000030504 00000 n question 1 of 3. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. An earthquake is what happens when two blocks of the earth suddenly slip past one directly above it on the surface of the earth is called the epicenter. 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Great exercise for Regents Earth Science. (Source: USGS). (i. How can you locate an earthquake's epicenter? For purposes of this activity, the least complicated and probably most accurate approach is to just use the term "magnitude," without needing to say "on the Richter scale" or "on the moment magnitude scale." to the lag time measured at this location? 3000 miles. The simulation renders three circles on a map and directs students to find the epicenter. All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream Mapping the history of natural hazards in a region, combined with an understanding of related geologic forces can help forecast the locations and likelihoods of future events. Using online resources and simulations available through the Earthquakes Living Lab, students explore the consequences of subsurface ground type and building height on seismic d Seismographs are measuring devices designed by engineers and used by researchers to determine the locations and magnitudes of earthquakes. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. directly above it on the surface of the earth is called the epicenter. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. 0000098546 00000 n Epicenter. Q(_?!6YV3B"\'9:4gTp*7^/P.X!skfkJ)1nG#a\{UD+iWM+ rQR]9SFTUPlM#"c:;tnsQPlu]Uyv?Ge}W;8cMA/x}'5clES~+}S+N7}wQ:/BkmI^" 5oqaBC[TRjq4.e}F:SQg{=u\xcg~EaZKReoC?oahJ` 'w endstream endobj 77 0 obj <>stream earthquake. 0000007097 00000 n This is determined by the P-and S-wave arrival times. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Quick Tips. Earthquakes and Seismic Waves Key Concepts . Earth and Space, Physical Science, A process called triangulation uses seismic data from three locations to identify the epicenter of an earthquake.copyrightCopyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Free K-12 standards-aligned STEM curriculum for educators everywhere. (5 minutes) Discuss how gathering information on epicenters can be applied. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). As the drum rotated, t, pen recorded the arrival of P, S, and surface, between arrival of P and S waves is called, epicenter, the longer the lag time measured, velocity, amplitude, and frequency of the. P wave: The first seismic wave of an earthquake. moment magnitude scale: Similar to the Richter scale, but replacing its use starting in the 1970s for more accuracy in measuring big earthquakes (magnitudes > 3.5) from greater distances. 500p;333aXb3 \a.1. Every year, earthquakes cause death and destruction worldwide. Use this information to complete the following. Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. The real-world earthquake data is viewable via a graphical interface using a scaling map. "`B(R6sj [CX7p+s =#;~ `'kA 1. Figure 2 is a seismic wave travel-time For upper grades, have students work individually, do two of the three seismic area tutorials, and look up historical earthquakes to learn their magnitudes, and make data tables or graphs with this information. HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N Z./$E )H %C[5ph[BUyGh7|!XPQiDjJ(|BNvylk+g;9G(#Aby>Jcf`XmnwtDD+;Z^I&Sb-4!7oi` L7 endstream endobj 78 0 obj <> endobj 79 0 obj <>stream Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. Civil engineers, who design houses, apartment buildings, schools, skyscrapers, bridges, highways, tunnels, water treatment facilities, factories and other structures, may use this data to help them create safer structures that are less likely to sustain damage during earthquakes. Explains how to find an earthquake epicenter using at least three seismograph stations. Students learn how engineers build shake tables that simulate the ground motions of the Earth caused by seismic waves in order to test the seismic performance of buildings. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. 0000006011 00000 n Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Point on Earth's surface directly above an earthquake's focus. Add to Library. 0000031066 00000 n %PDF-1.5 % Earthquakes & Volcanoes Test Review Answers. However, please review it for the specific setting, materials, students, and conventional safety precautions. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Make arrangements so that each student group has a computer with Internet access. In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. The farther a station is from the Thanks for your feedback! Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) Figure 2. Practicing this technique, the students work several problems on a map of the US. Subjects: Graphs, charts, and images can be used to identify patterns in data. 0000001408 00000 n 0000000956 00000 n Place a ruler (or straight edge) on the chart between the points you marked for the distance to the epicenter and the amplitude. When the tension becomes too great, the fault slips, causing an earthquake. Locating an Epicenter Activity - Arkansas Geological Survey HTAn 0000001893 00000 n Develop a solution to a technological problem that has the least negative environmental and social impact. Finally, the location of the 3 seismographs are placed on a map and the distance to the epicenter is used to draw a circle with an origin at each seismograph and a radius equal to the distance to the epicenter as taken from each seismogram. time for any point that is 3,000 miles In this activity, students use an online simulationVirtual Earthquakethat is accessible through the Earthquakes Living Lab interface, to locate the epicenter of an earthquake by making simple measurement on three seismograms, recordings of an earthquake's seismic waves detected by instruments (seismographs) far away from the earthquake. 0000002840 00000 n As you may know, people have look numerous times for . HS]o01j6R0iMm4U=wL8]BE< 0000002544 00000 n In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event.